Device for use in the manufacture of ornamental fabrics



June 1934- s. SVENSSON DEVICE FOR USE IN THE MANUFACTURE OF ORNAMENTAL FABRICS Filed April 18, 1933 mt'oznew Sven Svensson FIG! Patented June 26, 1934 UNITED STATES PATENT OFFICE Sven Svensson, Wittenberge, near Potsdam, Germany, assigner to The Singer Manufacturing Company, Jersey Elizabeth, N. J., a corporation of New Application April 18, 1933, Serial No. 666,639 In Germany May 20, 1932 10 Claims.

This invention relates to devices for use in the manufacture of ornamental fabrics, particularly pile fabrics, fringed fabrics and the like, to be used for instance, as coverings, such as floor coverings, cushion covers and the like.

It is already known to wind yarn or like material around a flat bar in manner to form loops enchained along one edge of said bar, whereupon the chain is secured to a base fabric or backing by stitching along said edge, and the bar is then withdrawn from the loops which are cut to form tufts.

It is also known to wind yarn or like material in loops around a forked member or bar, and to secure the wound yarn to a base fabric or backing by means of a line or lines of stitches formed in the gap between the prongs of the fork, whereupon the loops may be cut to form tufts.

The present invention has for an object to provide a device readily convertible from one suitable for operation in accordance with the known method first above referred to to one suitable for operation in accordance with the second known method aforesaid.

Another object is to provide such a device with a removable knife for cutting the loops.

Another object is to provide a guard for the knife.

Yet another object is to provide means for adapting the device for the production of pile fabrics of different heights of pile.

In the accompanying drawing, Fig. 1 is a plan of a simple form of a device according to the invention, the guard being shown in position.

Fig. 2 is a similar view of the device with the guard detached.

Fig. 3 is a fragmentary longitudinal section on the line aa of Fig. 2 showing the means for fixing the knife, the guard being detached.

Figs. 4 and 5 are longitudinal and transverse sections on the lines 12-!) and 0-0 of Fig. 2, respectively, of the guard.

Fig. 6 is a view corresponding to Fig. 2 showing a preferred construction according to the invention.

The device illustrated in Figs. 1-5 inclusive comprises a thin flat bar or strip of spring metal which is bifurcated to form prongs 1 and 2 having parallel edges and separated by a longitudinal stitch-receiving gap 3; the prong 1 being wider than the prong 2. The wider prong is cut away near its free end to afford a sunk seat for a knife 4 removably secured to the seat by screws 5, the upper face of the knife 4 being flush with the upper face of the prong 1 and its cutting edge extending beyond and being oblique to the straight outer edge of the prong 1.

The knife guard 6 is constituted as a lateral extension of a resilient clip 6' of U-form, the spaced jaws of which are controlled by a pinching screw 7, one of said jaws having an overturned flange or tongue portion 8 of a width corresponding to the width of the gap 3 between the prongs 1 and 2. With this arrangement, when the clip is slipped on to the free ends of the prongs, the 65 tongue 8 is received in the gap 3 and serves to hold the prongs 1 and 2 spaced in parallel relation when the usual winding of yarn or the like is applied to the bifurcated bar.

In general, in the manufacture of ornamental fabrics the operation is similar to that described in the specification filed with the application of Daniel H. Chason, dated January 4, 1933, Serial No. 650,073.

In the construction illustrated in Fig. 6, in lieu of a bifurcated bar having integral prongs, there in provided an undivided bar 9 fitted with a knife 10 removably secured by screws 11 to a seat formed near the free end of the bar.

Threaded into the bar 9 near the end remote from the knife 10 is a pinching screw 12 penetrating a slot 13 disposed transversely of the edge of the bar 9 and formed in the cranked end of an auxiliary bar 14 adjustable widthwise of the bar 9, the slot 13 being engaged by a steady pin 15 8 attached to the bar 9. In Fig. 6 the auxiliary bar 14 is shown as being spaced from the bar 9 a distance about equal to the width of said auxiliary I bar, it being understood that the width of the gap between the bars may be varied by virtue 907 of the screw and slot connection 12, 13 for the purpose of producing pile fabrics of different heights of pile, and that the auxiliary bar may be removed, so that the bar 9 with knife 10 may' be employed in the production of ornamental fab- 9 rics by the method described in the specification filed with the application of Jean Gregoriou Sakellarides, dated 25th February, 1933, Serial No. 658,552.

The clip 16 with its lateral knife guard exten- 0 sion 16 is engageable by the main and auxiliary bars 9 and 14 and serves the same purpose as the clip 6' and guard 6 of the construction illustrated in Figs. 1-5.

I claim:

1. A device of the class described, comprising a forked loop-forming member having two prongs separated by a stitch-receiving ga means for closing one end of said gap, said means being movable to open said end of said gap, a loop-cut- 1 0% ting knife fitted to one of said prongs, and a guard for said knife.

2. A device as claimed in claim 1 in which the knife is removable.

3. A device as claimed in claim 1 in which the guard is removable.

4. A device of the class described, comprising a forked loop-forming member having two'prongs separated by a stitch-receiving gap, a loop-cutting knife removably fitted to one of said prongs, and a removable guard for said knife, said guard serving to space said prongs.

5. A device of the class described, comprising a forked loop-forming member having two prongs widthwise adjustable relatively to one another to vary the gap between said prongs, a loop-cutting knife removably fitted to one of said prongs and having a cutting edge projecting beyond the edge of said last mentioned prong remote from the other prong, and a removable guard for said knife.

6. A device of the class a fiat bar having parallel edges, a loop-cutting knife fitted to one end of said bar and having a cutting edge extending beyond one of said parallel edges, 2. second bar spaced from the other of said parallel edges to afford a stitch-receiving gap between said bars and having a connection with said first mentioned bar at a point spaced from said knife permitting relative widthwise adjustment of said bars, and a guard for said knife.

'7. A device of the class described, comprising a flat bar having parallel edges, a loop-cutting knife fitted to one end of said bar and having a described, comprising cutting edge extending beyond one of said parallel edges, a second bar spaced from the other of said parallel edges to afford a stitch-receiving gap between said bars and having a removable connection with said first mentioned bar at a point spaced from said knife, and a guard for said knife.

8. A device of the class described, comprising a fiat bar having parallel edges, 2. loop-cutting knife fitted to one of said bars and having a cutting edge extending beyond one of said parallel edges, a second bar spaced from the other of said parallel edges with its edges in parallelism with those of said first mentioned bar, said second bar having a pin and slot connection with said firstmentioned bar at a point spaced from said knife, the slot extending transverse to said parallel edges, and a guard for said knife.

9. A device of the class described, comprising a forked loop-forming member having two prongs of unequal width separated by a stitch-receiving gap of a-width about equal to that of the narrower prong, a loop-cutting knife removably fitted tothe wider prong, and a guard for said knife.

10. A device of the class described, comprising a loop-forming bar having parallel edges, a loopcutting knife at one end of said bar, said knife having a cutting edge inclined to and extending beyond one of said parallel edges, and a second bar removably secured to said first mentioned bar near its opposite end in parallelism with and spaced laterally from the other of said parallel edges.

SVEN SVENSSON. 

